Solve the linear programming problem using the simplex method.
Maximize z=2x+7x2 subject to
5x₁ + x2 ≤50
7x₁ + 2x2 ≤70
X₁ +X2 ≤60
X1, X2>_0.
Select the correct choice below and, if necessary, fill in the answer box to complete your choice.

A. The maximum is
z= ? when x₁=? S₁ =? S2 =? and S3=?

B. There is no maximum solution for this linear programming problem.